Safety helmet



FIG. 1 is a front view of a safety helmet, showing my new design.

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a front, bottom, right side perspective view thereof shown incondition of use with a head rest mounting device.

CLAIM The ornamental design for a safety helmet, as shown and described. 